Jacobsen 67945 - LF 3400, Руководство по запасным частям и обслуживанию

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TROUBLESHOOTING 5
GB-27
5.3 ELECTRICAL CIRCUITS ____________________________________________________
When troubleshooting the machine using the controller
always check that Program Active lamp (1) is on. These
indicate that the controller has power and the program is
active.
Note: The controller requires a minimum of six volts to
operate.
Individual circuits can be tested by operating an input
switch, checking for the required input signal and looking for
a corresponding output. Keep in mind that not all switches
are located on the instrument panel. The traction pedal, reel
lift limit and brakes are controlled by small reed switches
mounted on the frame of the tractor.
If an input lamp does not light an inactive condition is
indicated. This could be caused by a fuse, faulty switch or
poor connection.
The electrical connections to the solenoids on the hydraulic
valves are also equipped with small indicator lamps. When
lit these lamps indicate that the output signal has reached
the connection. If lamps do not come on, check wires to and
from connector.